No, that's not true. At least not totally.
The mail-in rebates and discs packaged in box with the players (like the 2 that come with the A3 for example, or SM3 with the 40GB PS3) don't count, becuase they're not scanned anywhere.
The 5 additional free discs WalMart was giving away in store would count, as I understand it, because they are scanned, except that WalMart's numbers are not included in this.
The big gripe right now is that Open Season was given away (but scanned in store) with a promotion as part of a bundle with the PS3 - at Best Buy, I believe. So no one had to have any intent to buy the disc, they just got it thrown in. So the HD-backers want you to know that the BD ratio for last week really was only 2.2:1 and only 6.75 out of every 10 discs sold was BD, instead of the 2.65:1 and 7/10 that was reported.
(And yes, I'm pulling those numbers out of my arse, but you get the idea.)